公开(公告)号：US06333394B1

公开(公告)日：2001-12-25

申请号：US09379234

申请日：1999-08-23

申请人： Christian Maria Emile Bailly ,  Bhaskar Bhairavnath Idage ,  Swaminathan Sivaram ,  Nayaku Nivarati Chavan ,  Rein Mollerus Faber ,  Shamal Karunakaran Menon ,  Gautam Chatterjee ,  Godavarthi Satyana Varadarajan ,  James Day ,  Patrick Joseph McCloskey ,  Joseph Anthony King, Jr. ,  Arun Savalaram Jadhav

发明人： Christian Maria Emile Bailly ,  Bhaskar Bhairavnath Idage ,  Swaminathan Sivaram ,  Nayaku Nivarati Chavan ,  Rein Mollerus Faber ,  Shamal Karunakaran Menon ,  Gautam Chatterjee ,  Godavarthi Satyana Varadarajan ,  James Day ,  Patrick Joseph McCloskey ,  Joseph Anthony King, Jr. ,  Arun Savalaram Jadhav

IPC分类号： C08G6400

CPC分类号： C08G64/20 ,  C08G64/06 ,  C08G64/14 ,  C08G64/183 ,  C08G64/307

摘要： Copolycarbonates containing such structural units as birefringence-reducing or “soft block” units are prepared by conducting a reaction, such as melt polymerization or equilibration, between a precursor polycarbonate and a monomer, polycarbonate oligomer or high molecular weight polycarbonate which is a source of other structural units. The crystallinity of the resulting precursor copolycarbonate or one of the reagents employed in its preparation is enhanced and the precursor copolycarbonate is subjected to solid state polymerization.

摘要翻译： 通过在前体聚碳酸酯和单体，聚碳酸酯低聚物或高分子量聚碳酸酯之间进行诸如熔融聚合或平衡的反应来制备含有诸如双折射降低或“软嵌段”单元的结构单元的共聚碳酸酯 结构单位。 得到的前体共聚碳酸酯或其制备中使用的试剂之一的结晶度提高，前体共聚碳酸酯进行固态聚合。